Automobile engine cooling system



Aug- 30 1932- H. D. JOHNSON v 1,874,104

AUTOMOBILE ENGINE COOLING SYSTEM Filed sept. 16'.. 1951 lzvenzfo?" y lttofgg l Hanns? D. JOHNSON,

mg fluid, such as him wherein 51205 Figure 2;'

yai), tion.

Patented Aug.v 30, 1932.

para stares v i or oHrcAGo,';ILriNo1 VVKnan'rsca Ann cna-aiman-'rc1-maar' f if' nU'roMoBrLs ENG-1N Applicationmea september 1e, 1931.

My invention relates to'an improvement in automobile engine. coolingsystems and has for .one object the provision oi? improved means formaintaining circulation of a coolwater, about a machine,4 engine or thelike. I illustrate my invention in connection withtheradiator and engineblock of an ordinary automobile, but itwill be realizedthat it may haveother-applica- One object ris the provision oi means for circulatingYcooling water 'through the engine block of an automobile withouttheemployment of pumps or positively and mechanicalactuated conveyingmeans. Other objects `will appear from time totime in the course of thespecification and claims. l v I illustrate my invention more Aer lessdiagrammatically in the'accompanying drawing,

, Figure lis aside elevation with parts in section; l j

Figure .Figure 2 is a front elevation; 3 isasection on theline 3`3 ofFigure is a diagrammatic view with parts inY section, and.'

Figure k5 is a 'view similar to Figure 4, ot a variant form. c y Y `Likeparts are indicated by like symbols throughout the specification anddrawing.

"Referring to the drawing, A generally in- "dicates -any suitable enginehaving jacket structure A1 about the cylinders. A2 indicates the intakemanifold and A3 gener ally. indicates the carbureter structure.

B generally indicates the radiator structure of the automobile having apassage B1 eX- tending from a lower portion of the radiator to theengine block Jfor communication with the water jacket A1. B2 isa returnwaterv passage from the water jacket which may discharge as at B3 withinthe radiator structure.

Within the radiator structure is a passage member generally indicated asclosed at the top as at C1 but open at the bottom as at C2, at a pointwell below the normal level of water within the radiator. G3 indicatesthe cooling liquid, water or the like.

D indicates a pipe line extending from the matic illustration oi thewater which is 7 s, VvAssrf'rnon svannnn, rotin` or oirIGAGdiLLiNois :soooLiNe sYs'rEM y "serial No. 563,117.

fold AZ to an upper portion of the passage C. Itis essential that theoutlet connection between the passage C andthe passage D be above thelevel of the water within the passage intake mani C. Hence it isillustrated in Figure 1 as connecting with the passage C at a pointabove the'water inlet B3. rIhe open bottom C2 oi? the passage C may beintermittently closed as by thevalve member E, which passage C. G1indicates any suitable means, 'is

forneisample the "outlet with the. valve G2, for drainingjthe radiator.Figure 4L illustrates diagrammatically the functionj'oi` the device.'Figure 5,*with a slightly variant structure, is also a diagramthefunction of the device., ,l vItwill be realized that whereas I havedescribed and shown a practical and operative device, nevertheless manyVchanges might/be made in the size, shape, number sition of partswithoutdepartingfroin-the c spirit oi my invention. I therefore'wish my'description and drawing to :be taken` as in a broady sense illustrativeand diagrammatic rather than as limiting me tofmy .Spe .Showns-` L. 1 fc Thefuse and operation of my invention are as follows: 1 j. f' f I Itvwillbe clear from the structureherein shown that when the vengine is inoperation the iniiow voi' fuel and air lthrough the intake .manifoldwill-cause suction, through the'pipe line D, in the 4container G. AThiscreates or ytends to create avacuum inthe interior of the n orvoimlfinian To RALPH vn.

Vmay be a plate Vor disc normally upwardly drawn as .by the spring E1.It` may be guided for example by the stem E2 passing through theguide orguides E3.- It willbe understood that pressure within the chamber C, forexainplethe pressure of a column of water, will move the closureEdownwardly and permitfthe water to seek its general level in theradiator. On the other hand, any back or upward pressure closes theclosure IE5-preventing the flow o fwater inwardly and `upwardly intothe; container C Jr'r'om the, general interioroic the radiator; A Gindicates an ,outlet or overflow.l passage for the radiator, positionedexteriorfly of the and dispopassage in communication with said chamshallnot rise above I may provide the closure means E above deL j scribed.VIn any case, the suction through the passage B2 will withdraw waterfrom the water jacket A1 as diagrammatically illus! trated in Figures 4and 5, and this will tend y to raise the level of water in the passage Cabovethe normal level'of water. in .the radiator itself. The weight ofthe column of lwater so accumulated .will force open the clo-v sure Eand the water will iiow downwardly through the bottom of with the waterin the radiator. Thus, a circulation is maintained from the radiatorthrough the passage B1 to the engine block A1, and from the engine blockA1 throughthe passage, B2 to the chamber or passage C and thence throughthe closure E to the interior Vof the radiator. l Y,

Considering Figure l for eXample,`it will be clear that while there maybe atmospheric pressure or approximate atmospheric pressure above thewater in the radiator outside of the passage or container C, there willbe suction or a relative vacuumA in the space above the water levelwithinthe passage C. This ,relative suctionV will `not result in anyrise in level of the water from the bottom of the passage C,whether'because ofthe area of waterexp'osed Vor because'of the uselofthe closureEL 'It will cause Vwithdrawal of wa- `ter through thepassagesB1 and B2 from the radiator'to the interior `Vof the'passagefC,thus causing the necessary circulation of the coolinglmedium. f

Referring to Figurese `and 5it will be noted that no closure Eis'employed'an'd in many circumstances it maybe possible to dispenseWith its use. the level ofwater when the device is running the inlet ofthe member B2 andthe parts are illustrated in all figures disposedinsuch fashion ,asto prevent any such rise of level. f

I claim: j' v l 1. Ina device Vforr maintaining thecirculation" of acooling liquid for van engine, an engine, a waterjacket associatedtherewith, a radiator, a chamber Within said radiatorhavthe member C tojoin rtionof ya cooling liquidfor an engine, an

. water level said `chamber,.above the level of said' outlet fpassage,saidsuction-passage extending -to What is essential is-th'a-t jacket, aninlet passage member extending from the water jacket to the interior ofsaid chamber at a level above the water line, and a suction passageextending from the inlet manifoldnto said chamber at a llevel above thelevel of said outlet passage.

3. In a device for Vmaintaining jthe circulation of a coolingV liquidfor an engine, an

engine, a waterjacket associated therewith, 21.95 a radiator, a chamberin communication with said radiator at a point below the normal 4waterlevel .in said radiator, an outlet passage member extendingv fromthe-radiator, below the water line, to the water jacket, an inletpassage vmember extendingyfrom the water jacket to the interiorof saidvchamber at alevel above the water line insaid chamber, and asuctionpassage in communication with said chamber, above the level ofsaidoutlet passage, and means formaintaining a suc'- tion therethrough.f

t. In a device for maintaining the 'circulaengine, a` water jacketassociated therewith, a radiator, a chamber in communication `with saidradiator ata point below the normal in said radiator,lan outlet passagemember extending from theuradiator, below the water line, to the Waterjacket,anfinlet passage member extendingfrom the vwater Vjacket to theinterior of said chamber at a level above the water line in saidchamber,

and a suction passage in communication with no the inlet manifold ofsaid engine.

`Signed at Chicago countyof Cook and Statev of Illinois, this QthdayofSeptember ,M5

HARRY D. Jomvsoisi.V i

ing a bottom opening located below the normal water level insaid'radiator, `an* outlet passage member extending from the radiator,

below the water line, to the waterjacket, an inlet passage memberextending from the ,water jacketto the interior of'saidchamber at alevel above the water line, and a suction

